Made +41 rwhp from heads and NW 102mm TB - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Chris49066SS · 04-06-2022, 04:43 PM

GPI has done it again! Got my numbers from Ben at GPI today, and picked up 41.3 rwhp at 7600 rpm, and 14 ft lbs of torque. These were my stock heads with GPIs porting and swapping to LS3 hollow stem intake valves, stock TB to the Nick Williams 102mm that matches the LOD intake snout, PAC .700 springs, and FIC 850cc injectors. I am ecstatic over the numbers so far and can't wait to pick it up and see how it feels!

CamaroDreams76 · 04-06-2022, 04:57 PM

Man basically 525 from an auto. Thats impressive.

Ashen 6.2 · 04-06-2022, 06:47 PM

Nice gains!

RealQuick · 04-07-2022, 07:34 AM

Nice gains, thanks for sharing. Thats a ton of rpm!

Looks like you didnt gain any torque, just shifted peak (from 4900rpm to 5500rpm).

Bigdumogre · 04-07-2022, 08:10 AM

Damn those are amazing numbers for a auto.

Chris49066SS · 04-07-2022, 08:45 AM

Quote:

Originally Posted by RealQuick

Nice gains, thanks for sharing. Thats a ton of rpm!

Looks like you didnt gain any torque, just shifted peak (from 4900rpm to 5500rpm).

You're right, when I went with the short runner intake I lost quite a bit of torque but ended up with faster time slips. So it'll be interesting to see the outcome of this round . I almost wonder if I should have gotten my torque converter reflashed to
a higher stall , if that could have been a thing

1JEWLDSSRS · 04-07-2022, 11:18 AM

Wow Chris, holy crap!! That's impressive my friend!! Glad to see you finally get it all squared away and exceeded your expectations! Nicely done sir. She's gonna be really fun to drive and run at the track. Hitting those high rpm's safely is going to be pure music!! Mine sings a real nice tune above 7200... Not sure what stall you have, but the 4200-4500 I did really made up for the lost tq I experienced with the 3200 and the LOD.. Enjoy that monster!!! Yes sir..

Chris49066SS · 04-07-2022, 05:09 PM

Thanks guys! I'm literally about drooling for those timeslips

I have to say, it makes me hungry for solid roller territory, but its almost primed for boost. TH400 and drivetrain first, or Procharger next? I can't decide!!!

InFiD3ViL · 04-07-2022, 09:01 PM

Damn Chris, that is awesome!

I knew it! I keep hearing from people online 'Oh, the LS3 heads already flow so good that there is little to no benefit from porting or aftermarket heads...waste of money, blah blah bla.'

With the mods you have already done, 41 rwhp is a massive bargain vs. what you likely paid for that port work -those are aftermarket head gains right there. I know that's not 41hp just from the heads, but jeez...525 NA wheel HP on an L99 bolted to a 6L80? Freaking awesome, and an inspiration to those of us reaching for the 500 club.

Oh man, I need some more $$$ and a trip to Arkansas!

I do need to ask though, are those TQ numbers low for you build? I would have expected a bit higher or am I wrong here?

Chris49066SS · 04-08-2022, 09:51 AM

Quote:

Originally Posted by InFiD3ViL

Damn Chris, that is awesome!

I knew it! I keep hearing from people online 'Oh, the LS3 heads already flow so good that there is little to no benefit from porting or aftermarket heads...waste of money, blah blah bla.'

With the mods you have already done, 41 rwhp is a massive bargain vs. what you likely paid for that port work -those are aftermarket head gains right there. I know that's not 41hp just from the heads, but jeez...525 NA wheel HP on an L99 bolted to a 6L80? Freaking awesome, and an inspiration to those of us reaching for the 500 club.

Oh man, I need some more $$$ and a trip to Arkansas!

I do need to ask though, are those TQ numbers low for you build? I would have expected a bit higher or am I wrong here?

Very true, it far exceeded my expectations! It felt like the 500 auto NA mark was elusive, but the guys at GPI really brought out the potential of the SS4 cam and pushed it to the max, as that seems to be the limiting factor now with the current setup, as you can see it makes power continuously and finally starts to roll over, but even though it starts to roll over, its still not necessarily falling on it's face.

And, InFiD3ViL, I feel as soon as I went to the short runner LOD intake, yes, it murdered the torque, as Ryan said. My 60' didn't change from before and after that mod though, it stayed in the 1.5x territory, and picked up ~.1 in the 1/4, but I feel it was the heads and TB that really opened it up and let it do its work (dyno-wise) and is still proof that its designed more for a higher rpm solid roller or boost application, as I am starting to push an NA hydraulic roller setup closer, (not to), but closer to the max. I've got my eye on a track around here, and hopefully it won't be long before I can get some timeslips!

RealQuick · 04-08-2022, 10:21 AM

Quote:

Originally Posted by InFiD3ViL

Damn Chris, that is awesome!

I knew it! I keep hearing from people online 'Oh, the LS3 heads already flow so good that there is little to no benefit from porting or aftermarket heads...waste of money, blah blah bla.'

There is very little gains to be had (probably less than 20rwhp) by switching heads on a typical setup that revs to ~6500rpm. His setup shows this. Where better heads really shine is in more rpm... thats why he saw as much as he did.

So all those people online stating there isnt much to gain are right on... if they mean for normal LS operating conditions. Most people dont have setups that rev north of 7krpm.

Chris49066SS · 04-08-2022, 03:02 PM

Quote:

Originally Posted by RealQuick

There is very little gains to be had (probably less than 20rwhp) by switching heads on a typical setup that revs to ~6500rpm. His setup shows this. Where better heads really shine is in more rpm... thats why he saw as much as he did.

So all those people online stating there isnt much to gain are right on... if they mean for normal LS operating conditions. Most people dont have setups that rev north of 7krpm.

I heard from Ben when they were tuning, and he told me that it made 508rwhp up from 483, up +25 at 6900rpm but the stock injectors were at 95% duty cycle, so he suggested the FICs, 850cc. Put those on, and picked up an additonal +16. I can see by the curve it really likes 7k plus. Just runs out of cam from the looks of it

InFiD3ViL · 04-08-2022, 08:55 PM

Quote:

Originally Posted by RealQuick

There is very little gains to be had (probably less than 20rwhp) by switching heads on a typical setup that revs to ~6500rpm. His setup shows this. Where better heads really shine is in more rpm... thats why he saw as much as he did.

So all those people online stating there isnt much to gain are right on... if they mean for normal LS operating conditions. Most people dont have setups that rev north of 7krpm.

Ok, that makes sense - I hadn't really looked at it like that.

IWANTA(ss) · 04-10-2022, 05:43 AM

Quote:

Originally Posted by Chris49066SS

I heard from Ben when they were tuning, and he told me that it made 508rwhp up from 483, up +25 at 6900rpm but the stock injectors were at 95% duty cycle, so he suggested the FICs, 850cc. Put those on, and picked up an additonal +16. I can see by the curve it really likes 7k plus. Just runs out of cam from the looks of it

I’m waiting on my heads to get back from GPI now. Man I hope I see gains like that.

04-06-2022, 04:43 PM	#1
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,634	Made +41 rwhp from heads and NW 102mm TB GPI has done it again! Got my numbers from Ben at GPI today, and picked up 41.3 rwhp at 7600 rpm, and 14 ft lbs of torque. These were my stock heads with GPIs porting and swapping to LS3 hollow stem intake valves, stock TB to the Nick Williams 102mm that matches the LOD intake snout, PAC .700 springs, and FIC 850cc injectors. I am ecstatic over the numbers so far and can't wait to pick it up and see how it feels! Attached Images __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371 Last edited by Chris49066SS; 04-07-2022 at 10:04 AM.

04-06-2022, 04:57 PM	#2
CamaroDreams76 Tri-County Camaro SWFL Drives: 2013 IOM 2SS/RS/1LE Join Date: Apr 2013 Location: South West FL Posts: 3,079 View My Garage	Man basically 525 from an auto. Thats impressive. __________________ Just bolt ons........ https://www.camaro5.com/forums/showthread.php?t=343023

04-06-2022, 06:47 PM	#3
Ashen 6.2 Drives: 2014 Camaro Z/SS Join Date: May 2014 Location: NW Arkansas Posts: 1,998 View My Garage	Nice gains! __________________ 2014 Camaro SS L99, Ashen Grey w/Black Leather - Build thread - http://www.camaro5.com/forums/showthread.php?t=491561 Mods - GPI 416 w/Custom Grind Cam, Ported Heads & Tuned by Ben, Holley Dominator ECU, Mag Heartbeat, ZL1 Fuel Pump & DSX Aux Pump, NW 103 TB, FIC 1650's, Alky Meth, Circle D 3600 Triple Disc, Kooks Headers, Viking Coil Overs & all the BMR Goodies in the rear, Zl1 3.23 Diff, DSS Axles, Gulfcoast Driveshaft, Hendrix Offset Diff Bushings, AFE Solid Subframe Bushings, 875HP/843TQ 5FDP

04-07-2022, 07:34 AM	#4
RealQuick Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014 Location: Bridgewater Posts: 693	Nice gains, thanks for sharing. Thats a ton of rpm! Looks like you didnt gain any torque, just shifted peak (from 4900rpm to 5500rpm). __________________ 2010 Camaro SS M6 - 416ci TT 989rwhp/1031rwtq @ 20psi 2014 ZL1 A6 Vert - Headers and CAI

04-07-2022, 08:10 AM	#5
Bigdumogre Drives: 2012 Camaro SS Join Date: Dec 2019 Location: New York Posts: 1,434	Damn those are amazing numbers for a auto. __________________ 2012 Camaro 2SS/RS - CSP Custom Cam 232/240 .615/.615 113 +3, Texas speed CNC heads, FTI billet triple disc converter, K&N cai, Katech ported TB, GPI Ported/rod modded manifold, Texas speed 1 7/8 headers, HFC, Flowmaster 2 chambers with x pipe, Mishimoto CC, MSD wires, Roto fab washer relocation, tru cool 40k trans cooler, apex scoop, Pedders extreme coil overs and much more!!

04-07-2022, 11:18 AM	#7
1JEWLDSSRS Drives: 2011 SS-RS Join Date: May 2011 Location: FLORIDA Posts: 11,435	Wow Chris, holy crap!! That's impressive my friend!! Glad to see you finally get it all squared away and exceeded your expectations! Nicely done sir. She's gonna be really fun to drive and run at the track. Hitting those high rpm's safely is going to be pure music!! Mine sings a real nice tune above 7200... Not sure what stall you have, but the 4200-4500 I did really made up for the lost tq I experienced with the 3200 and the LOD.. Enjoy that monster!!! Yes sir.. __________________ TSP STAGE 3 CAM,231/246 @112 LSA 614/641 LIFT, CIRCLE D 5C-4200-4500 CONVERTER,LOD INTAKE.CORSA EXHAUST. DSS 1 PC DS. PEGASUS SOLID CRADLE MOUNTS. 486RWHP/475RWTQ.LOTS MORE.

04-07-2022, 05:09 PM	#8
Chris49066SS Drives: 2010 SS L99 Join Date: Sep 2018 Location: Missouri Posts: 1,634	Thanks guys! I'm literally about drooling for those timeslips I have to say, it makes me hungry for solid roller territory, but its almost primed for boost. TH400 and drivetrain first, or Procharger next? I can't decide!!! __________________ Previous PB:11.079 @ 122.99mph.. New setup time: TBD The 11.079 pass: https://youtu.be/pz27Zq54t_E Build thread - www.camaro5.com/forums/showthread.php?t=555371

04-07-2022, 09:01 PM	#9
InFiD3ViL Drives: 2010 CGM 2SS/RS LS3 Swapped A6 Join Date: Sep 2016 Location: Spring Hill, FL Posts: 4,575	Damn Chris, that is awesome! I knew it! I keep hearing from people online 'Oh, the LS3 heads already flow so good that there is little to no benefit from porting or aftermarket heads...waste of money, blah blah bla.' With the mods you have already done, 41 rwhp is a massive bargain vs. what you likely paid for that port work -those are aftermarket head gains right there. I know that's not 41hp just from the heads, but jeez...525 NA wheel HP on an L99 bolted to a 6L80? Freaking awesome, and an inspiration to those of us reaching for the 500 club. Oh man, I need some more $$$ and a trip to Arkansas! I do need to ask though, are those TQ numbers low for you build? I would have expected a bit higher or am I wrong here? __________________ 2010 CGM Camaro 2SS LS3 Swapped A6 - GPI LS3 SS1 .647/.638, (224/237, 112 +4, 7º overlap) on CamMotion 8620 core, BTR Platinum .660" Dual Spring kit w/titanium retainers, CHE bronze trunnion upgrade, stock heads milled @ .015, Melling HV 10296 oil pump, TSP 1-7/8" long tube headers (W/Catless Off-road Pipes), Corsa Xtreme 3" Catback, GPI Ported/Rod Mod Intake, Stage 2 Ported Throttle Body, Vararam OTR CAI, Mike Norris Gen 2 catch can + GM 1LE clean side separator, 160º thermostat - Megan Racing adjustable coilovers (lowered 1.75"), MRR M017 10/11" wheels-Tuned by Ryan @ GPI